Definition of charnel house in English:

noun

The elite were often buried in log-lined tombs within the charnel houses, accompanied by a selection of rich grave goods.

In preparation for his monstrous experiment Victor scours charnel houses, places for vivisection, and graveyards, for parts from which to assemble his New Adam or Modern Prometheus, which is the novel's subtitle.

The burial rites involved placing the dead person in a charnel house made of wooden posts, burning it, and then constructing a mound over the top.